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[求助] 如何获取照片文件的拍摄日期

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发表于 2019-6-21 21:00:47 | 显示全部楼层 |阅读模式
我电脑有好多照片 想分类 一下
手动太累 太麻烦
我想用VB 获取 照片的拍摄日期  将 相同的日期 的照片放在同一个文件夹
发表于 2019-6-23 21:41:24 | 显示全部楼层
Option Explicit

Private Type GdiplusStartupInput
    GdiplusVersion           As Long
    DebugEventCallback       As Long
    SuppressBackgroundThread As Long
    SuppressExternalCodecs   As Long
End Type


Private Type PropertyItem
   propId                   As Long               ' ID of this property
   Length                   As Long               ' Length of the property value, in bytes
   Type                     As Long                 ' Type of the value, as one of TAG_TYPE_XXX  defined above
   Value                    As Long                ' property value
End Type


Private Declare Function GdiplusStartup Lib "gdiplus" (Token As Long, inputbuf As GdiplusStartupInput, Optional ByVal outputbuf As Long = 0) As Long
Private Declare Sub GdiplusShutdown Lib "gdiplus" (ByVal Token As Long)
Private Declare Function GdipLoadImageFromFile Lib "gdiplus" (ByVal FileName As Long, hImage As Long) As Long '从指定路径的文件,得到一个image对象,从文件创建GDI+句柄
Private Declare Function GdipDisposeImage Lib "gdiplus" (ByVal Image As Long) As Long

Private Declare Function GdipGetPropertyCount Lib "gdiplus" (ByVal Image As Long, numOfProperty As Long) As Long '获取EXIF显示总数
Private Declare Function GdipGetPropertyIdList Lib "gdiplus" (ByVal Image As Long, ByVal numOfProperty As Long, list As Long) As Long ' 获取PropertyId列表
Private Declare Function GdipGetPropertyItemSize Lib "gdiplus" (ByVal Image As Long, ByVal propId As Long, Size As Long) As Long ' '获取每个EXIF信息的数据段大小
Private Declare Function GdipGetPropertyItem Lib "gdiplus" (ByVal Image As Long, ByVal propId As Long, ByVal propSize As Long, Buffer As Long) As Long '获取EXIF信息段
Private Declare Function GdipGetPropertySize Lib "gdiplus" (ByVal Image As Long, totalBufferSize As Long, numProperties As Long) As Long '获取此Image对象中存储的所有属性项的总大小(以字节为单位)。GetPropertySize函数还可以获取此Image对象中存储的属性项的数量。
Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (lpDst As Any, lpSrc As Any, ByVal ByteLength As Long)



Private Function GetPhotoDate(ImagePath As String) As String
    Dim Bitmap                  As Long
    Dim Token                   As Long
    Dim Index                   As Long
    Dim PropertyCount           As Long
    Dim ItemSize                As Long
    Dim Prop                    As PropertyItem
    Dim GdipInput               As GdiplusStartupInput
    Const PropertyTagExifDTOrig As Long = &H9003&                  ' Date & time of original

    GdipInput.GdiplusVersion = 1
    GdiplusStartup Token, GdipInput
    GdipLoadImageFromFile StrPtr(ImagePath), Bitmap
    GdipGetPropertyCount Bitmap, PropertyCount
    ReDim PropertyList(PropertyCount - 1) As Long
    GdipGetPropertyIdList Bitmap, PropertyCount, PropertyList(0)
    For Index = 0 To PropertyCount - 1
        GdipGetPropertyItemSize Bitmap, PropertyList(Index), ItemSize
        ReDim Buffer(ItemSize - 1) As Byte
        GdipGetPropertyItem Bitmap, PropertyList(Index), ItemSize, ByVal VarPtr(Buffer(0))
        CopyMemory Prop, ByVal VarPtr(Buffer(0)), Len(Prop)
        ReDim Data(ItemSize - 16) As Byte
        CopyMemory Data(0), ByVal Prop.Value, ItemSize - 16
        Select Case PropertyList(Index)
        Case PropertyTagExifDTOrig
            GetPhotoDate = StrConv(Data, vbUnicode)
        End Select
    Next
    GdipDisposeImage Bitmap
    GdiplusShutdown Token
    Text1 = GetPhotoDate
End Function

Private Sub Form_Load()
Dim a As String
a = "d:\临时文件夹\P1030744.JPG"
    GetPhotoDate a
   
End Sub


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